[HBASE-11195] Potentially improve block locality during major compaction for old regions

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0, 0.94.26, 0.98.10, 2.0.0
• Fix Version/s: 1.0.0, 0.98.10, 0.94.27
• Hadoop Flags: Reviewed
• Assignee: churro morales
• Reporter: churro morales
• Created: 16/May/14 16:43
• Updated: 15/Oct/19 05:55
• Resolved: 20/Jan/15 02:17

Description

This might be a specific use case. But we have some regions which are no longer written to (due to the key). Those regions have 1 store file and they are very old, they haven't been written to in a while. We still use these regions to read from so locality would be nice.

I propose putting a configuration option: something like
hbase.hstore.min.locality.to.skip.major.compact [between 0 and 1]

such that you can decide whether or not to skip major compaction for an old region with a single store file.

I'll attach a patch, let me know what you guys think.

Sub-Tasks

• Fix incorrect condition for minimum block locality in 0.98: Closed